Heat-insulated container.



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LINZY HICKS, OF OMAHA, NEBRASKA, ASSIGNOR TO HICKS RETINNING COMPANY, OFOMAHA, NEBRASKA, A CORPORATION OF NEBRASKA.

HEAT-INSULATED CONTAINER,

Specification of Letters Patent.

Patented Dec. 31,1918.

To all whom it may concern:

Be it known that I, LINZY HICKS, a citizen of the United States,residing at Omaha, in the county of Douglas and State of Nebraska, haveinvented certain new and useful Improvements in Heat-InsulatedContainers; and I do hereby declare the following to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This invention relates to improvements in heat insulating containers ofthe type adapted either for containing cold substances and retainingthem at their low temperature, or for containing hot sub tances andretaining them at their high temperatures.

The primary object in view is the production of a simple and eflicientstructure adapted to providein an inex ensive mannor, a container ofmaximum e ciency in the non-conduction of heat. I

With this and further objects in view, as will in part hereinafterbecome apparent and in part be stated, the invention comprises certainnovel constructions, combinations and arrangements of parts assubsequently specified and claimed.

In the accompanying drawing Figure 1 is a longitudinal vertical centralsection of a container embodying the features of the present invention,parts being seen in elevation.

Fig. 2 is a top plan view thereof.

Fig. 3 is an enlarged fragmentary side elevation observed from the planeat right angles to the plane of the section of Fig. 1.

Fig. 4 is a fragmentary section similar to Fig. 1 of a slightly modifiedembodiment, parts being seen in elevation.

Referring to the drawing by numerals, 1 indicates a container .orreceptacle, preferably of sheet metal and of any appropriate contour,but preferably cylindrical, with its upper end open and its lower endclosed. The upper edge portion of receptacle 1 is turned downward toform an outstanding horizontal flange 2, having its outer portionresting upon a similar flange 3 formed at the upper edge of a casing 4,whlch casing is similar in contour to receptacle 1, but is suflicientlylarger than the receptacle to surround and inclose all parts-thereofexcept the upper end and be spaced therefrom.

The space between the casing 4 and the receptacle 1 is preferably filledwith asbestos or other heat insulating means indicated at 5. The outerportion of the flange 3 is turned upward and produces an annular band orretainer 6.

The annular band 6 supports and is inclosed by a heat insulating fabric7 such as a sheet of asbestos, and the outer face of the sheet is snuglyengaged by an exterior casing 8, which conforms generally in con-' tourto that of casing 4, and surrounds and incloses the same, except at theupper end, the casing 8 being sufiiciently larger than casing 4 to leavea space 9 therebetween, which is preferably maintained as a vacuumspace. The upper portion of the casing 8 is turned inward and bentdownward to form an inclosed annular band 10, lapping past and lyingwithin the inclosure of the band 6. It is to be observed that theinsulating sheet 7 is interposed between and in fact clamped between thebands 10 and 6, as well as lying between the band 6 and the innersurface of easing 8. The sheet of insulation 7 extends sufficientdistance below the flange 3 to cover an inwardly extending bead 11,formed in any appropriate manner as by the crimping of the material ofeasing 8 to form an annular shoulder underlapping the outer edge offlange 3 and sustaining the same and engaged parts against descendingwithin the casing 1 either from the pressure of air incident to thevacuum space or from contained weight. The upper face of the flange 2forms an annular seat for a cover block 12 for the receptacle 1, thesaid block being preferably formed of wood or other like power conductorof heat. The block 12 is of sufficient thickness to have its uppersurface to lie above the uppermost portion of casing 8 when block 12rests on the flange 2. The upper portion of casing 8 presents a rolledor rounded edge 13, on which rests a gasket 14, which is engaged by theouter edge portion of a preferably sheet metal cap 15 fixed to the upperface of the block 12. Cap 15 is preferably provided with a dependingannular flange at its outer edge inclosing the gasket 14. A recess ordepression 16 is formed in the cap 15 and is engaged by a cam 17"carried by a cross rod 18 and having an operating handle 19 ofsuflicient length and relative location to lie on top of the cap 15 andhold the same in locked position as clearly indicated in Fig. 3. Theshaft or rod 18 is rotatably mounted in Open eyes 19 formed in cars 20,fixed to and upstanding from the casing 8. The ears 20 are alsopreferably engaged by a bail 21 for facilitating carrying of the entirecontainer.

The vacuum may be initially produced in the space 9 in any known andappropriate manner, and one convenient method of such productionconsists of the provision of a soft metal nipple 22, communicating Withthe space 9 preferably through the bottom of easing 8 and adapted toreceive the hose of a vacuum pump. After the pump has been manipulatedfor producing as nearly erfect vacuum as possible, the nipple 22 has itswalls mashed together and then bent over to prevent intaking of air. Aprotecting housing 23 having a cap 24 is provided and surrounds thenipple 22.

It should be apparent from the foregoing that every precaution is takenin the structure disclosed to avoid distribution of heat by diffusionand the arrangement is also such as to largely prevent heat radiation.The operation of the structure is also obvious and consists briefly inelevating the handle or lever 19 until the cam 17 is lifted out of therecess 16 and then the rod 18 is withdrawn from the eyes 19 and the cap15, with the cover block 12, may be then lifted fromv the receptacle.The substance to be preserved, as for example, ice cream, is introducedand the parts are replaced. The heat of surrounding atmosphere, failingto find its way into the receptacle 1, will not affect the condition ofthe ice cream for a prolonged period. When it is desired to remove theice cream, the lock made up of cam 17 and cooperating parts isdisconnected and the cover plate removed.

In Fig. 4 is illustrated a slightly modified embodiment wherein, in lieuof providing a special joint between the inner and outer casings, theseveral parts are anchored to a connecting ring. In this figure, thereceptacle 1 is provided with a flange 2 overlapping flange 3' ofeasing 1. The two flanges 2' and 3' are connected in any appropriatemanner as by screws, with a supporting ring 7 of wood or other likepowen conductor of heat. The outer casing 8' is provided with a head 11underlapping the ring 7' and supporting the same in position. The innersurface of the ring 11 is preferably tapered downward and a block 12' isfitted within the taper so as to have its upper surface flush with theupper surface of the ring. A preferably metallic ring 15 is fixed. tothe upper surface of block 12 and outstands from the outer edge thereofand forms a flange overlapping the ring 7 A cross-web 16 is preferablyformed inteing a casing, insulating means sustained at the upper portionof the casing. a container within the casing sustained by and pendentfrom the insulating means and spaced from the casing, a heatnon-conducting block removably closing the upper end of the receptacle,and means for detachably locking the block in position against thecontainer to bind the latter against the insulating means.

2. In a heat insulating container, the combination of an outer casinghaving an in- Wardly extending support, an inner casing spaced from theouter casing, a suspending member carried by the inner casing andadapted to engage said support, a cover for the container fittingagainst the suspending member, and means carried by the outer casing forbinding engagement against the cover to hold the said suspending memberagainst the support.

3. A heat insulating container, comprising an inner casing, an outercasing spaced from and surrounding the inner casing, a flangeoutstanding from the inner casing toward the outer casing and beingformed adjacent the outer easing into an upstanding ring, means ofsupport extending from the outer casing beneath the portion of theflange, and heat insulating means interposed between the support andflange including the ring portion of the flange.

4. A heat insulating container, comprising an inner casing, an outercasing spaced from and surrounding the inner casing, a flangeoutstanding from the inner casing toward the outer casing .and beingformed adjacent the outer easing into an upstanding ring, means ofsupport extending from the outer casing beneath the portion of theflange, heat insulating means interposed between the support and flangeincluding the ring portion of the flange, and a receptacle arrangedwithin and spaced from the inner casing and having means of supportresting on a portion of the inner casing.

5. A heat insulating container, comprising an inner casing, an outercasing spaced from and surrounding the inner casing, a flangeoutstanding from the inner casing toward the outer casing and beingformed adjacent the outer casing into an upstanding ring, means ofsupport extending from the outer casing beneath the portion of theflange, heat insulating means interposed between the support and flangeincluding the ring portion of the flange, and a receptacle arrangedwithin and spaced from the inner casing and having a flange overlappingthe flange of the inner casing.

6. A heat insulating container, comprising an inner casing, an outercasing spaced from and surrounding the inner casing, a flangeoutstanding from the inner casing toward the outer casing and beingformed adjacent the outer casing into an upstanding ring, means ofsupport extending from the outer casing beneath the portion of theflange, heat insulating means interposed between the support and flangeincluding the ring portion of the flange, a receptacle arranged Withinand spaced from the inner casing and having a flange overlapping theflange of the inner casing, the upper end of the receptacle being open,and a heat insulating block resting upon the flange of the receptaclewhen closing the upper end of the receptacle.

In testimony whereof I aflix my signature in presence of two Witnesses.

LINZY HICKS. Witnesses:

CHAs. L. DUNDEY, A. L. TIMBLIN.

